org.apache.hadoop.hive.common.type

Class CalendarUtils

java.lang.Object

org.apache.hadoop.hive.common.type.CalendarUtils

public class CalendarUtils
extends Object

Conversion utilities from the hybrid Julian/Gregorian calendar to/from the proleptic Gregorian. The semantics here are to hold the string representation constant and change the epoch offset rather than holding the instant in time constant and change the string representation. These utilities will be fast for the common case (> 1582 AD), but slow for old dates.

Field Summary

Fields

Modifier and Type	Field and Description
static long	SWITCHOVER_DAYS
static long	SWITCHOVER_MILLIS

Method Summary

Modifier and Type	Method and Description
static int	convertDate(int original, boolean fromProleptic, boolean toProleptic)
static int	convertDateToHybrid(int proleptic) Convert an epoch day from the proleptic Gregorian calendar to the hybrid Julian/Gregorian.
static int	convertDateToProleptic(int hybrid) Convert an epoch day from the hybrid Julian/Gregorian calendar to the proleptic Gregorian.
static long	convertTime(long original, boolean fromProleptic, boolean toProleptic)
static long	convertTimeToHybrid(long proleptic) Convert epoch millis from the proleptic Gregorian calendar to the hybrid Julian/Gregorian.
static long	convertTimeToProleptic(long hybrid) Convert epoch millis from the hybrid Julian/Gregorian calendar to the proleptic Gregorian.
static String	formatDate(long epochDay, boolean useProleptic) Formats epoch day to date according to proleptic or hybrid calendar
static String	formatTimestamp(long epochMillis, boolean useProleptic) Formats epoch Millis to timestamp according to proleptic or hybrid calendar

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

SWITCHOVER_MILLIS

public static final long SWITCHOVER_MILLIS

SWITCHOVER_DAYS

public static final long SWITCHOVER_DAYS

Method Detail

convertDateToProleptic

public static int convertDateToProleptic(int hybrid)

Convert an epoch day from the hybrid Julian/Gregorian calendar to the proleptic Gregorian.

Parameters:

hybrid - day of epoch in the hybrid Julian/Gregorian

Returns:

day of epoch in the proleptic Gregorian

convertDateToHybrid

public static int convertDateToHybrid(int proleptic)

Convert an epoch day from the proleptic Gregorian calendar to the hybrid Julian/Gregorian.

Parameters:

proleptic - day of epoch in the proleptic Gregorian

Returns:

day of epoch in the hybrid Julian/Gregorian

convertDate

public static int convertDate(int original,
                              boolean fromProleptic,
                              boolean toProleptic)

convertTime

public static long convertTime(long original,
                               boolean fromProleptic,
                               boolean toProleptic)

convertTimeToProleptic

public static long convertTimeToProleptic(long hybrid)

Convert epoch millis from the hybrid Julian/Gregorian calendar to the proleptic Gregorian.

Parameters:

hybrid - millis of epoch in the hybrid Julian/Gregorian

Returns:

millis of epoch in the proleptic Gregorian

convertTimeToHybrid

public static long convertTimeToHybrid(long proleptic)

Convert epoch millis from the proleptic Gregorian calendar to the hybrid Julian/Gregorian.

Parameters:

proleptic - millis of epoch in the proleptic Gregorian

Returns:

millis of epoch in the hybrid Julian/Gregorian

formatDate

public static String formatDate(long epochDay,
                                boolean useProleptic)

Formats epoch day to date according to proleptic or hybrid calendar

Parameters:

epochDay - epoch day

useProleptic - if true - uses proleptic formatter, else uses hybrid formatter

Returns:

formatted date

formatTimestamp

public static String formatTimestamp(long epochMillis,
                                     boolean useProleptic)

Formats epoch Millis to timestamp according to proleptic or hybrid calendar

Parameters:

epochMillis - epoch Millis

useProleptic - if true - uses proleptic formatter, else uses hybrid formatter

Returns:

formatted timestamp